Quadrature Coherent Detector of Wideband Internediate Frequency Signal

Author

Minglei, Yang ; Baixiao, Chen ; Shouhong, Zhang

Author_Institution

Nat. Lab. of Radar Signal Process., Xidian Univ., Xi´´an

fYear

2006

fDate

16-19 Oct. 2006

Firstpage

1

Lastpage

4

Abstract

On the basis of reviewing and contrasting the three processing methods of quadrature sampling of intermediate frequency (IF) signal: the LPF (low pass filter) method, the Bessel interpolation method and the polyphase filter method, this paper deals with the applicability of the three methods with wideband signals. Through the analysis of the progression of spectra and simulations on computer, it can be concluded that the maximum processing bandwidth is f_s/2 and the LPF method is more suitable for the quadrature coherent detector of wideband IF signal and the characteristics of the filter fit for it and something that deserve to be noticed are also given. Finally the application of wideband signal using the LPF method is illustrated with an example

Keywords

Bessel functions; interpolation; low-pass filters; signal detection; signal sampling; Bessel interpolation method; LPF method; low pass filter; polyphase filter method; quadrature coherent detector; signal sampling; wideband intermediate frequency signal; Band pass filters; Computational modeling; Detectors; Frequency; Interpolation; Low pass filters; Signal analysis; Signal processing; Signal sampling; Wideband; Quadrature coherent detector; the Bessel interpolation method; the LPF method; the polyphase filter method; wideband signal;

fLanguage

English

Publisher

ieee

Conference_Titel

Radar, 2006. CIE '06. International Conference on

Conference_Location

Shanghai

Print_ISBN

0-7803-9582-4

Electronic_ISBN

0-7803-9583-2

Type

conf

DOI

10.1109/ICR.2006.343510

Filename

4148487